The Film: The Little Mermaid (1989)

The Inappropriate: When Ariel spies the man of her dreams aboard his mighty ship, she falls head over fin in love with him. Get that? Fin? Yeah, she’s a mermaid. He’s a man. And never the twixt shall meet.
 
How They Make It Work: It’s a fairytale, so it all ends happily ever after, with Ariel shedding her fins for her prince.

Unless you’re a resolute feminist. In which case you’ll probably find the ease with which Ariel gives up her family, friends and life for a man difficult to stomach.